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Table 1 Demographic information on patients with AAV in 2015 in China

From: The frequency of ANCA-associated vasculitis in a national database of hospitalized patients in China

 

AAV

GPA

MPA

EGPA

Number

4440

385

396

223

Age (years)

60.0 ± 15.6

50.7 ± 15.6

62.3 ± 17.2

50.3 ± 15.6

Age group, %

 0–17

1.3

1.6

3.5

3.1

 18–30

5.0

11.4

2.8

9.4

 31–40

4.8

10.4

2.8

11.2

 41–50

11.8

23.9

7.4

20.2

 51–60

20.6

24.4

17.4

27.8

 61–70

29.9

17.1

34.8

21.5

  > 80

26.6

11.2

31.3

6.6

Male, %

46.4(45.0,47.9)

49.9(44.9,54.9)

48.5(43.6,53.4)

52.5(45.9,59.0)

Occupation, %

 Professional or semi-professional

9.1 (8.2,10.0)

14.7 (10.9,18.4)

8.5 (5.6,11.4)

16.1 (11.1,21.1)

 Worker

2.9 (2.4,3.4)

2.9 (1.1,4.6)

2.5 (0.9,4.2)

3.9 (1.3,6.6)

 Farmer

25.7 (24.3,27.0)

22.4 (18.0,26.8)

25.4 (20.9,30.0)

22.0 (16.3,27.6)

 Retired

20.4 (19.1,21.6)

12.9 (9.4,16.5)

24.3 (19.8,28.8)

15.6 (10.6,20.6)

 Unemployed

7.2 (6.4,8.0)

6.9 (4.2,9.6)

7.9 (5.1,10.7)

4.4 (1.6,7.2)

 Others

34.7 (33.3,36.2)

40.2 (35.1,45.4)

31.4 (26.5,36.2)

38.0 (31.4,44.7)

Medical insurance

 Basic Medical Insurance

44.4 (43.0,45.9)

38.2 (33.3,43.0)

44.4 (39.6,49.3)

45.7 (39.2,52.3)

 New Rural Co-operative Medical Care

24.1 (22.9,25.4)

24.7 (20.4,29.0)

21.7 (17.7,25.8)

25.1 (19.4,30.8)

 Other insurance

16.0 (14.9,17.1)

16.1 (12.4,19.8)

21.5 (17.4,25.5)

17.9 (12.9,23.0)

 No insurance

15.4 (14.4,16.5)

21.0 (17.0,25.1)

12.4 (9.1,15.6)

11.2 (7.1,15.4)

Admission place

 Emergency

12.6 (11.6,13.6)

15.0 (11.3,18.7)

11.5 (8.2,14.7)

16.4 (11.5,21.4)

Routine

79.9 (78.7,81.1)

76.7 (72.3,81.0)

83.1 (79.2,86.9)

77 (71.3,82.6)

 Other

7.5 (6.7,8.3)

8.3 (5.5,11.2)

5.5 (3.1,7.8)

6.6 (3.2,9.9)

ICU stay, %

2.2 (1.7,2.6)

0.3 (0,0.8)

3.5 (1.7,5.4)

0.4 (0,1.3)

Costs (10,000 RMB), median (Q1–Q3)

13 (7–23)

10 (6–19)

14 (8–24)

11 (7–18)

Length of stay (days), median (Q1–Q3)

12 (8–19)

12 (7–18)

13 (8–21)

12 (8–16)

In-hospital mortality, %

1.8 (1.4,2.2)

1.3 (0.2,2.4)

2.8 (1.2,4.4)

0.4 (0,1.3)

  1. Abbreviations: AAV anti-neutrophil cytoplasmic autoantibody associated vasculitis, GPA granulomatosis with polyangiitis, MPA microscopic polyangiitis, EGPA eosinophilic granulomatosis with polyangiitis, ICU intensive care unit, RMB Renminbi, which is Chinese currency.